Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IWF vs VB: how they differ
IWF and VB hold 5% of their weight in the same names, and VB returned more over the year.
iShares Russell 1000 Growth ETF and Vanguard Small-Cap Index Fund.
What they hold in common
By the books each fund has filed, IWF and VB hold 5% of their money in the same securities at the same weight.
| Holding | IWF | VB |
|---|---|---|
| Astera Labs, Inc | 0.22% | 0.45% |
| Credo Technology Group Holding Ltd | 0.13% | 0.55% |
| JABIL INC. | 0.12% | 0.49% |
| NATERA, INC. | 0.11% | 0.45% |
| EMCOR GROUP, INC. | 0.11% | 0.45% |
| REVOLUTION MEDICINES, INC. | 0.11% | 0.46% |
| CARPENTER TECHNOLOGY CORPORATION | 0.09% | 0.35% |
| NRG ENERGY, INC. | 0.09% | 0.38% |
| TAPESTRY, INC. | 0.09% | 0.36% |
| FTAI Aviation Ltd. | 0.08% | 0.34% |
| ATI INC | 0.08% | 0.33% |
| CASEY'S GENERAL STORES, INC. | 0.08% | 0.36% |
| Only in IWF | Only in VB |
|---|---|
| NVIDIA CORPORATION 13.85% | Flex Ltd 0.36% |
| APPLE INC. 6.72% | Atmos Energy Corp 0.35% |
| ALPHABET INC. 6.18% | Illumina Inc 0.31% |
| BROADCOM INC. 5.21% | Moderna Inc 0.30% |
| ALPHABET INC. 4.98% | Smurfit Westrock PLC 0.30% |
| MICROSOFT CORPORATION 4.11% | F5 Inc 0.29% |
| MICRON TECHNOLOGY, INC. 3.86% | United Therapeutics Corp 0.28% |
| TESLA, INC. 3.65% | Okta Inc 0.28% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.
| IWF iShares Russell 1000 Growth ETF | VB Vanguard Small-Cap Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | Russell 1000 growth | Small-Cap |
| Total return, 1 year | +7.0% | +15.2% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −10.5 pts | −2.3 pts |
| Expense ratio | 0.18% | 0.03% |
| Already in the S&P 500 | 93.6% | 21.7% |
| Holdings | 368 | 1311 |
IWF in plain words
IWF is an index equity fund tracking the Russell 1000 growth. Over the year to Sep 11, 2026 it returned +7.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.18% a year. By its holdings filed for Jun 30, 2026, 94% of the fund by weight is stocks the S&P 500 also holds, across 368 positions, with the top ten at 54.4%. It sat 5.0% below its high of Jun 1, 2026 on Sep 11, 2026.
VB in plain words
VB is an index equity fund tracking the Small-Cap. Over the year to Sep 11, 2026 it returned +15.2% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 22% of the fund by weight is stocks the S&P 500 also holds, across 1311 positions, with the top ten at 4.3%. It sat 5.1% below its high of Aug 14, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, IWF or VB?
- In the year to Sep 12, 2026, with distributions reinvested, IWF returned +7.0% and VB returned +15.2%, so VB returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IWF or VB?
- IWF charges 0.18% a year and VB charges 0.03%, so VB is cheaper. Fees come from each fund's prospectus.
- How much do IWF and VB overlap with the S&P 500?
- By their latest filed holdings, 94% of IWF and 22% of VB by weight is stocks the S&P 500 already holds. Between the two funds, 5% of their books are the same securities at the same weight.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IWF against VB, data as of Sep 12, 2026. https://etfiq.com/compare/any/IWF-VB Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources